Abstract:The main characteristics of the general atmospheric circulation in November 2018 are as follow. There was one polar vortex center in the Northern Hemisphere. The circulation presented a four wave pattern in middle high latitudes. The East Asian trough behaved weakly. There were two major rainfall processes in this month and the monthly mean precipitation over China was 24.9 mm, which is 32.4% more than normal. Monthly mean temperature was 3.1℃, which is 0.2℃ higher than normal. There were four cold air processes in this month, two of which were moderate intensity cold air processes nationwide. Additionally, there were two fog haze processes in this month. From November 24 to December 3, the haze process mixed with dust aerosols occurred in northern China, which was the most widely, the longest and the heaviest one since autumn of 2018.